Comparison

Multi Timer Interval Stopwatch vs Underwater Stopwatch

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Multi Timer Interval Stopwatch

Features
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Run unlimited timers, interval timers, and stopwatches at once โ€” with a classic flip clock, stopwatch alarm, and satisfying flip sound effect. The all-in-one Multi Timer, Interval Timer & Stopwatch app for focus, workouts, cooking, and daily routines. Fast, flexible, and built for people who need more than one timer running at a time. Multi Timer Interval Stopwatch is an advanced timer, countdown, interval, and stopwatch app designed for users who need multiple timers running simultaneously. Create unlimited timers, run interval training sessions, manage countdowns, and stay organized during study, cooking, workouts, meditation, and everyday tasks. Unlike a basic timer app, this app lets you control every timer individually or manage all timers together with one tap. Whether you need a countdown timer, interval timer, minute timer, hour timer, kitchen timer, or multi stopwatch, this app gives you a fast and flexible experience โ€” plus a beautiful classic flip clock with an authentic flip sound effect. NEW FEATURES: - Interval Timer โ€” set work/rest cycles for workouts, HIIT, and Tabata training - Classic Flip Clock โ€” a retro-style flip clock display - Flip Sound Effect โ€” authentic mechanical flip sound for a satisfying, nostalgic feel MAIN FEATURES: - Create unlimited timers and stopwatches - Run multiple timers simultaneously - Interval timer with custom work/rest rounds - Use countdown timer or stopwatch mode for each timer - Stopwatch alarm alerts you the moment time's up - Start, pause, reset, or stop timers individually - Start and stop all timers at once - Fast and accurate stopwatch with lap tracking - Classic flip clock with flip sound effect - Customize timer background colors - Switch between grid layout and linear layout - Clean, lightweight, and easy to use PERFECT FOR: - Interval Training, HIIT & Tabata - Study Timer & Pomodoro Sessions - Meditation Timer - Kitchen & Cooking Timer - Workout & Gym Intervals - School & Homework Sessions - Office & Work Management - Daily Routines & Reminders - Countdown Events & Activities MULTI TIMER, INTERVAL & STOPWATCH TOOLS Track several countdown timers at once โ€” perfect for cooking multiple dishes, studying different subjects, or managing tasks at work. Every timer can instantly switch to stopwatch mode, ideal for sports, training, and speed tracking, complete with a stopwatch alarm so you never miss a beat. The stopwatch includes advanced lap tracking โ€” record unlimited laps, view split times, and save full sessions for later review. Great for running, cycling, and gym training, turning your app into a professional multi stopwatch and lap timer. This app combines: - Multi Timer - Interval Timer - Stopwatch with Lap Tracking & Alarm - Countdown Timer - Classic Flip Clock - Minute & Hour Timer - Days Counter - Timer & Stopwatch tools in one app SIMPLE, FAST, AND FLEXIBLE Designed for speed and simplicity, Multi Timer Interval Stopwatch gives you full control over your timers without unnecessary complexity. Customize your timers, organize your layout, and manage all your countdowns, intervals, and stopwatches from one place. Download Multi Timer Interval Stopwatch today and enjoy a powerful multi timer, interval timer, flip clock, stopwatch alarm, and stopwatch experience in one easy-to-use app. Terms of Use (EULA): https://multitimerapp.blogspot.com/#terms-of-use

About

Underwater Stopwatch

Features
Read full description

A lightweight Apple Watch stopwatch and timer built for wet hands. Everything is controlled by rotating the Digital Crown, so you never need the touchscreen. It keeps working when your fingers are wet, gloved, or underwater, and while your watch is in Water Lock. TWO MODES Stopwatch counts up from zero, with laps. Timer counts down from any duration you set, drawn as a draining hourglass, with three unmistakable buzzes at zero. Run past zero and the overtime is recorded too. CROWN CONTROLS Rotate up to start, pause, and save. Rotate down to add a lap, or to continue a paused session. No taps, no buttons, nothing to fumble for. HAPTIC TIME CUES Set a repeating buzz at any interval, plus an optional stronger one for milestones. A light tap every 30 seconds and a firmer one every 5 minutes, for example. Track elapsed time without ever looking at your wrist. STAYS ON SCREEN The app holds the display for your whole session, so a glance shows your timer instead of the watch face. ON YOUR IPHONE Every session syncs across: full history, lap splits with faster and slower comparisons, and your average and longest times. Set durations and cues from either device. BUILT FOR Swimming and pool laps. Surfing. Cold plunges and sauna rounds. Breath-hold and apnea training. Anything you time where looking at a screen is not practical. PRIVATE BY DEFAULT No workouts. No fitness tracking. No Health data. No account, no subscription, no ads, no analytics. Every session stays on your devices.

Screenshots

Multi Timer Interval Stopwatch4 screens
Underwater Stopwatch4 screens

Verdict

The call

The clearest difference is ads: Underwater Stopwatch at none against Multi Timer Interval Stopwatch's shown. Underwater Stopwatch also leads on update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Multi Timer Interval Stopwatch ships an update weekly, Underwater Stopwatch every 3 days. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

Scorecard2 real differences ยท 4 level
Multi Timer Interval Stopwatch versus Underwater Stopwatch: the parameters behind the verdict, then further details
ParameterMulti Timer Interval StopwatchUnderwater Stopwatch
PriceFreeFree
Update frequencyWeeklyEvery 3 days โ€” better
AdsYesNo โ€” better
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, Apple Watch
Requires iOS18.618.0 โ€” better
Further details โ€” not scored
Size37 MB4 MB
Age rating4+4+
DeveloperSoufiane ElgarahVlad Topala

In-app purchases

None

Multi Timer Interval Stopwatch

No in-app purchases

None

Underwater Stopwatch

No in-app purchases

Questions

Is Multi Timer Interval Stopwatch free?
Multi Timer Interval Stopwatch is free to download, with no in-app purchases.
Is Underwater Stopwatch free?
Underwater Stopwatch is free to download, with no in-app purchases.
Do Multi Timer Interval Stopwatch or Underwater Stopwatch have ads?
Multi Timer Interval Stopwatch shows ads; Underwater Stopwatch does not.
Which is updated more often, Multi Timer Interval Stopwatch or Underwater Stopwatch?
Multi Timer Interval Stopwatch ships an update weekly, and Underwater Stopwatch every 3 days. Most recently, Multi Timer Interval Stopwatch was updated on September 24, 2026 and Underwater Stopwatch on September 22, 2026.

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